Water Science and Engineering 2008, 1(3) 93-101  DOI:   10.3882/j.issn.1674-2370.2008.03.010   ISSN: 1674-2370 CN: 32-1785/TV

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drinking water
soluble microbial products (SMP)
mathematical modeling
Xin YU
Lin YE
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Modeling the formation of soluble microbial products (SMP) in drinking water biofiltration

Xin YU*1, Lin YE2, Gu WEI3

1. Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361003, P. R. China
2. Department of Civil Engineering, The University of Hong Kong, Hong Kong, P. R. China
3. Taizhou Institute of Science and Technology, Nanjing University of Science and Technology, Taizhou 225300, P. R. China


Both a theoretical and an empirical model were developed for predicting the formation of soluble microbial products (SMP) during drinking water biofiltration. Four pilot-scale biofilters with ceramsite as the medium were fed with different acetate loadings for the determination of SMP formation. Using numerically simulated and measured parameters, the theoretical model was developed according to the substrate and biomass balance. The results of this model matched the measured data better for higher SMP formation but did not fit well when SMP formation was lower. In order to better simulate the reality and overcome the difficulties of measuring the kinetic parameters, a simpler empirical model was also developed. In this model, SMP formation was expressed as a function of fed organic loadings and the depth of the medium, and a much better fit was obtained.

Keywords drinking water   biofiltration   soluble microbial products (SMP)   mathematical modeling  
Received 2008-07-30 Revised 2008-08-28 Online:  
DOI: 10.3882/j.issn.1674-2370.2008.03.010
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